Colorado must be different than around here. (South Puget sound)
Hardly any of the second hand stores or Value Village or Goodwill stores have much, if any old plastic cameras. And, if they do they want much more than $.99
Not sure why but they have prices of 7.99-14.99 on that sort of junk. Not sure if anyone pays that or they get some kind of support for unsold stuff that depends on its supposed ‘value’.
Sure, 20 years ago the bins were piled high with this sort of cameras, all priced at $1-2, but it’s all gone now.
About 30 years ago I picked up a incomplete 60mm f11.7 refractor of undetermined make. I removed the .965 focusing draw tube and rigged up a standard 1.25 focuser. It doesn’t look like much but within the limits of it’s simple two element achromat it gives clean crisp images of the moon and planets.
Half frame connection? If I slip out the visual back, I have a conversion to T mount and can use it on my Olympus Pen F at prime focus.